Alright, got the test done at a pool store, see the attached picture. This water sample was collected just after I finished work, and before I added chlorine to bring FC back up to 12 ppm. I got a reading of 7 with my test, so seeing their 6.87 gives me more confidence I’m testing FC correctly. Also, the CYA level they got was 32, which helps since I was having trouble getting a result myself.
As for metals, no iron, and 0.1 ppm copper. Their paper recommends to add something called GLB Sequa-Sol for that, but what do you guys think? Is the copper an issue?
They also said Calcium Hardness is low, but I know I read in the Pool School here in a vinyl pool that doesn’t matter, so I’m not concerned with that.
Finally, after explaining to them he situation about my pool being green for so long, their recommendation was this: “Wait 2-3 days without adding any chlorine, then add 5 gallons of liquid shock at once at night”. Not gonna lie, the idea of adding a bunch of shock at once came to mind, because before joining TFP I watched a video that explained how much more effective adding 3 gallons of chlorine at once is than adding 1 a day for 3 days, but I don’t want to do anything without discussing here, because you guys are the ones I trust, and I don’t want to mess anything up.
Right now my plan is to just continue maintaining 12 ppm and brushing/vacuuming each day, and hope for improvement, but the urge to pour several gallons of shock in at once one of these nights is growing. Could that possibly hurt the process? Is it a myth that it would be more effective?
